Device for cleaning electrodes of make-and-break spark-plugs.



HERBERT e, lewin, or sena, Texas.

nevica non, CLEANING ELEcTnonEs or Makelaar-nasen To. all whom it majcpnce'ln Be it known t atl, HERBERT G. IRWIN,l a

tube. The tube has an insulation 5 about the citizen of the ,y nited States, residing at Spur, in the county of Dickens and State 0f Texas, have invented certain new and useful Improvements in Devices for Cleaning Electrodes of Make-and-Break Spark-Plugs; and

I do herebydeclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvments in devices for cleaning electrodes of make and break spark plugs, and the object in view is to produce a simple and efficient device of this nature so arranged that the electrode may be cleared from carbon or other foreign substances lwithout removing the plug fromthe cylinder of the engine.

My invention consists of.further details of construction, combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the appended claim.

I illustrate my invention in the accompanying ldrawings which, with the letters of reference marked thereon, form a part of *this specification and in which:

Figure 1 is a central vertical sectional view through a spark plug.

Fig. 2 is a bottom plan view., 'and Fig. 3 isa top plan view.

Reference now being4 had to' the details of the drawings by numerals:

1 designates a spark plug adapted to be i attached to the cylinder of an engineLand mounted in an apertured portion thereof is.

a stationary electrode tube containing the axially movable electrode 3, having a beveled shoulderV 32, adapted to frictionally engage the lower end of the tube in which it is mounted, and being held in contact therewith through the medium ofthe coiled'I 'spring 7 which bears between the terminal" fana-ranas. l

`acircumferentially'threaded portion of said specification of Letters'ratem. leawwa amg f3.9 @13,@30'1 Appn'canon mea December 3,1917. serial no. 205,195. l' I l y l same separating the tube from direct contact with the plug@ and 11 designates a contact ring fastened to the lower end of the electrode 3. A thumb screw 8- is mounted .u pon the `upper threaded end of the electrode 3 and 1s keyed thereto by means of the pin 9 which forms means for imparting a rock ing or oscillating movement to the electrode 3. Mounted 1n a vertical opening in the plug l is an oscillating electrode 2, having a handle 2 keyed thereto, and the lower endV faces, this being accomplished by giving a rotary movement to the electrode 3 when the v against the contact portion l2 is held ringll. 7

By `the provision of a deafice embodying the features of my invention it will be noted that means is aiforded whereby any deposit of foreign matter, such as carbon, upon the contact ring 11 may be cleansed by oscillating the electrode Q so that the contact point 12 *will engage the ring 11 and after which-by rotating the ring through the medium of the thumb nut the contact surfaces may be cleaned.

VVhat'I-cl'aimto be new is:

A device for cleaning electrodes of make and break spark plugs, comprising a flanged I shell having parallel openings formed therein, a tube 'fitted in oneof-sai'd openings and l. having a flange at its lowerfend, and a nut fitted about its: upper end,'the inner marginal edge of the- Harige being beveled, an electrode mounted within said tube land having av cylindrical headjat its llower end,` with -a beveled shoulder engaging said beveled edge of the flange', a collar about said head below lthe beveled shoulder, "a winged nut mounted upon the upper threaded-'endl of the electrode, Aa lconnection intermediate said nut and shoulder adjacent thereto, a conicalhaped spiral spring interposed between the fvw' amd said mm3, a movab dec/mnd@ pass- En. testimony whereof l hereunto `frzx; my mg through the other. opemng 1n he Shen? slgnature In presen@ of two-Wltnesses. I

and havug a la-emly extending finger., with HERBERT G.' RWIN.

a, Contact Eug theeomund a bandi@ fixed. 'm Wsnsses: 4 the 'uppeur prngatmg and. of said movrb L. R. BAmmTT, electrode. A "il L. HIGGINBOTHAM. 

